Sakurakan

Located in a quiet residental area, this sento has been in operation since 1959, although its present incarnation is the result of much renovation and rebuilding. In spring, the main attraction is the view of the cherry blossoms, which can be admired even while you're soaking away. The dark-coloured water used is the same as at many sento in southern Tokyo, known as kuroyu – tapped from an underground spring, it carries all kinds of good stuff with it (including the pulverised and decayed bark of ancient trees) and is said to be great for your health. There's an eat-in space and karaoke facilities on the second floor, so you can entertain either yourself or a group.